1. The problem statement, all variables and given/known data A small dam of triangular shape as shown is made from concrete. Find the stresses on the foundation at A and B. Assume concrete and water weighs 25kN/m^3 and 10kN/m^3 (All dimensions in the attached picture are in metres) 2. Relevant equations sigma = force/cross sectional area bending stress = M.y/I (I'm thinking we might need to use this) centroid of triangle is a 1/3 from the high side 3. The attempt at a solution I'm pretty much all over the place as I have no direction. So pretty much all that I've jotted down as just been ideas that lead nowhere. I labeled the top of the dam as C Area ABC = 6m^2 W (distributed loading for concrete) = 25 x 6 = 150kN/m One idea I was told was to find the bending stress at point A and B, take I to be value of the dam, find the Max M of the dam and the value of centroids to be 1m for point B and 2m for point A. I'm not too sure if my FBD is correct because I think it may be a fixed support but this is what my friend thinks it will look like. See below. I just need the right direction or the right idea. I'm thinking that I have to try and convert those weights into a force, just not sure how to work out the force for the water.